<?php
	class NodeModel extends CommonModel {
		protected $_validate	=	array(
			array('name','checkNode','节点已经存在',0,'callback'),
		);
	
		public function checkNode() {
			$map['name']	 =	 $_POST['name'];
			$map['pid']	=	isset($_POST['pid'])?$_POST['pid']:0;
	        $map['status'] = 1;
	        if(!empty($_POST['id'])) {
				$map['id']	=	array('neq',$_POST['id']);
	        }
			$result	=	$this->where($map)->field('id')->find();
	        if($result) {
	        	return false;
	        }else{
				return true;
			}
		}
	}